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AlorAir® Sentinel HD90 Basement &Crawl Space Dehumidifier, Capacity: 90PPD (AHAM) 198PPD(Saturation)

Model : Sentinel HD90

4.9 Average

$999.00 List Price: $1,250.00

Sentinel HD90 dehumidifier is designed specifically for crawlspaces and basements. Low noise level, great COP,2.88/kwh, and huge capacity 90PPD at AHAM condition.
Draining Mode: Gravity Draining

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Humidity is the cause of dampness, stuffiness or odor in the basement or crawlspace. Failure to control the humidity levels with not only cause structural damage like wood rot or wood warping, but will also create the perfect environment for allergens like mold, and mildew to grow.

Most homeowners tend to ignore the humidity levels in the crawlspace or basements, however, research from the American Lung Association has proven that moisture, odor, and allergens in these spaces can easily spread out to the entire house.

Key features

  • Supper COP Energy Star Listed 2.88L/Kwh.
  • Continuous gravity Pipe Drainage.
  • Coated Coils with Stainless Side Plate.
  • Hot Gas Valve Defrosting System.
  • Compatible with Remote Control.  (Notice: sold separately).
  • Ducting options for divided spaces
  • Small – compact and portable.
  • Quick access to the main board.
  • Quiet operation.
  • Engineered for low-temperature operation.
  • Laundry mode.


The sentinel HD90 is a high capacity dehumidifier. It is ideal for tight spaces dehumidification. These spaces may include:

  • Crawlspaces,
  • Attics.
  • basements.

This unit is design and built to stimulate air circulation while operational, this is the main reason the sentinel HD90 is able to produce superior results in this space.

The sentinel HD90, however, offer you a wide range usability application. The sentinel HD90 is built small – compact and portable with heavy-duty straps for ease movement. Since this unit can cover a wide space that extends up to 2,600 square feet, it can, therefore, be deployed in:

  • households.
  • Shops.
  • Storage areas.
  • Garages.
  • Restoration work.
  • Industrial institutions.
  • Laboratories.
  • Offices.
  • Restaurants or bars.
  • Museums or sports halls.

Generally, in any space that requires humidity levels to be regulated.

All-purpose use

Capacity. - The sentinel HD90 is able to remove at least:

  • 90 pints of water per day at 115V(80ºF-60%).
  • 90 liters of water per day at 220V(30º-80%).

This is very impressive comparing the sentinel HD90 is the same size as the Sentinel HD55.

Performance. - The sentinel HD90 is built to provide you with superior result fast. It combines the following features:

  • Air filtration - The sentinel HD90 is equipped with easy to clean filters that are used to trap any mold spores and other Impurities in the air.
  • Auto humidistat - The sentinel HD90 is equipped with an advanced humidity sensor that is able to notice changes in humidity levels in the bypass air design reducing short cycling and saving energy.
  • Quick internal access - The sentinel HD90 can be easily disassembled in under a minute, for easy service and maintenance.
  • Remote control - The sentinel HD90 will allow you to remotely adjust the dehumidifier setting remotely without having to do it manually on the unit. This makes it easy to control humidity in a tight space. (Sell separately)
  • Plug and play – At Alorair we have built and designed the sentinel HD90 to be an easy plug and play appliance you don’t need to have any technical knowledge to operate this unit. All available installation modes are easy and don’t require a technician.
  • Duct options - The sentinel HD90 allows you to provide focus dehumidification or dehumidification in different space without moving the dehumidifier.
  • Warranty – The sentinel HD90 has an extended 5 years warranty.At our state-of-the-art production facility, our engineer's design and carefully built the Sentinel HD90 to perfection. Every unit is thoroughly tested and proven to 100% effective at lowering humidity levels.
  • Support – At Alorair we have a dedicated support team, that is available 24/7 to our customers via email, phone or live chat. We are dedicated to ensuring that all our customers using any of our product like the sentinel HD90 get instant support when they encounter any challenges.

Make increased indoor humidity a problem of the past! Invest in the sentinel HD90 today!

Power 115V/60HZ
Current 5.56A
COP 2.88L/Kwh
Size For Up to 2,600 sq.ft.
Filter Pre Filter (Optional MERV-8 Filter)
Air flow 230 CFM,350 CMH
Sound Pressure Level <58DBA
Refrigerant R410A
Feet Adjustable Feet
Draining Gravity Draining
Defrosting Control System HGV Defrosting
Functioning Temperature Range 33~105℉
Functioning Humidity Range 35~95%
Capacity115V(80ºF-60%) 90Pints
Weight 78.0Ibs
Dim(LxWxH) 23.2x15.2x17.7in
Loading quantity 20”:180Sets/40”:412Sets/40”HQ :515Sets

Ratings Summary

97% Recommend this product of 54 responses

54 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN % Complete
2 Stars
NAN% Complete
1 Stars
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Total: 54 Reviews
Exceed expectations
By 'Bree Beltran ', Reviewed on 2020-07-06 15:18:26
My old dehumidifier has only been used for 2 years and now it is not working. Fortunately, we now have a better unit. Sentinel HD90 not only effectively reduces the humidity level but also filters harmful substances in the air. This is a feature that our old model does not have.
Small size and high capacity
By 'Margo Wilkinson ', Reviewed on 2020-06-29 16:51:45
I purchased this Alorair® 90 pint dehumidifier a month ago. I thought it had a large size. In fact, it was a small unit. I couldn't imagine such a large capacity dehumidifier being so compact. It reduced the humidity in my basement from 80% to 45%. There is no problem at present, I hope it can be maintained.
Highly recommend this model
By 'Ross Houghton ', Reviewed on 2020-06-22 19:09:40
Sentinel HD90 is a large-capacity dehumidifier. It is small and easy to carry. I usually need to dehumidify in different corners of the house. Although it is easy to move, I still bought two models of the same capacity.
Please give me some advice
By 'Britney Fountain ', Reviewed on 2020-06-13 08:13:41
After getting the AlorAir® Sentinel HD90, I installed it in my basement loft. We live on the second floor, so I can't hear the sound of it running. I have to go downstairs often to check if it is working properly. This model is equipped with a remote control system, maybe I should buy a remote control, what do you think?
Quiet and convenient operation
By 'Jacques Cope ', Reviewed on 2020-06-06 13:30:45
As most reviews have said, it has a quiet operation and effectively controls humidity levels within a range of 2,600 square feet. This dehumidifier can be installed in any space that requires dehumidification, and it can be used without technical knowledge.
High efficiency and low energy consumption
By 'Mikey Kim ', Reviewed on 2020-05-29 19:11:39
My basement is very damp due to moisture. Coupled with the clogging of the drainage pipe in the basement, I had to spend a considerable amount of money to buy a dehumidifier to solve it. Thankfully, this AlorAir® Sentinel HD90 dehumidifier did not disappoint me. I can easily operate it, it effectively reduces the humidity to below 50%, and is conducive to purifying the air.
Suitable for our basement
By 'Leja Ellwood ', Reviewed on 2020-05-22 15:16:48
This dehumidifier is very suitable for our basement. For reference, my basement is about 2300 square feet. We usually put some important things there, so keeping the air dry is helpful to protect the items from mold and moisture. If you Also want a comfortable basement, then I recommend you to buy it.
Designed for low temperature operation
By 'Abu Kelley ', Reviewed on 2020-05-16 09:45:55
I have been using this product all the time, and I can safely say that AlorAir® Sentinel HD90 is one of the best choices for the crawling space dehumidifier. It can maintain normal operation at low temperatures, has a defrosting system, and operates quietly.
By 'Vivien Morin ', Reviewed on 2020-05-08 09:20:26
This AlorAir® Sentinel HD90 90 pint dehumidifier is great! I replaced my old dehumidifier. I have used it for about 2 weeks. It runs quieter and extracts a lot of water from the air. The poorly considered thing is that I did not purchase a remote control and replaceable filters, but this is not a problem at the moment, and it does not affect the normal operation of the dehumidifier.
Excellent product
By 'Khalil Strickland ', Reviewed on 2020-05-05 09:23:21
This Alorair 90 pint dehumidifier can sense changes in humidity levels. We have a double storey house, we put it in the wettest place downstairs and use the remote control to adjust the dehumidifier settings. It also has some other powerful features, in short, worth every penny.


Questions & Answers